??----I would just put some extra oil in the tank.----Idle for 10 minutes.----Shut off fuel to carburetor.-----Let it idle till it stops.----Store motor in the running position.----Winterizing is complete.
Does spark jump a gap of 5/16" on both leads ?----There is no " head gasket " on it.-----There is no gasket between block and crankcase cover.-----Upper and lower crankshaft seals will need to be replaced.---Water pump impeller needs to be replaced.----Washer at the top of water tube might need...
That small lever is throttle in neutral only.----It is NOT a choke.-----Starting fuel enrichment is done by the electric primer valve.-----Key is pushed in and held in while cranking it over for cold starting.